Tru Spec Back Vented Prefab Single Up Port 15" Subwoofer Enclosure

Port Area: 52.00 inch2 Tuning Frequency: 35 Hz Net Internal Volume: 3.50 ft3 Total woofer displacements factored in: 0.24 cuft Tru Spec Back Vented Prefab Single Up Port 15" Subwoofer Enclosure This listing includes: (1) Tru Spec MDF Vented Prefab Single 15" Subwoofer Enclosure Tru Spec Prefabricated enclosures are simple, straight to the point, true to spec sub enclosures with proper airspace and non restrictive port area that allows you to have custom box performance at a reasonable price. Total woofer displacements factored in: 0.24  cuft ) *What does this mean? You will have 3.5 cubic feet of internal volume AFTER your sub displacements.  (Most 15" are around 0.15-0.25 cuft displacement) Box external dimensions: Length: 34.00" Depth: 14.00" Height: 22.00" Specifications: Material Thickness: 0.75" Net Internal Volume: 3.50 ft3 Tuning Frequency: 35 Hz Port Area: 52.00 inch2 Cutout Diameter: 14.20" Flush Trim Diameter: 16.00"